docs: def freeze(self):
          """
          Process all EvalValue to real value
          """
          self._lazy = False
          for k, v in self.items():
              if k in self._env:
                  continue
              for _k, _v in v.items():
                  if isinstance(_v, Lazy):
                      if self.writable:
                          _v.get()
                      else:
                          try:
                              v.__setitem__(_k, _v.get(), replace=True)
                          except:
                              print "Error ini key:", _k
                              raise
                          del _v
          self._globals = SortedDict()